inany: Let length of sockaddr_inany be implicit from the family

sockaddr_inany can contain either an IPv4 or IPv6 socket address, so the
relevant length for bind() or connect() can vary.  In pif_sockaddr() we
return that length, and in sock_l4_sa() we take it as an extra parameter.

However, sockaddr_inany always contains exactly a sockaddr_in or a
sockaddr_in6 each with a fixed size.  Therefore we can derive the relevant
length from the family, and don't need to pass it around separately.

Make a tiny helper to get the relevant address length, and update all
interfaces to use that approach instead.

In the process, fix a buglet in tcp_flow_repair_bind(): we passed
sizeof(union sockaddr_inany) to bind() instead of the specific length for
the address family.  Since the sizeof() is always longer than the specific
length, this is probably fine, but not theoretically correct.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions